| Issue |
ESAIM: M2AN
Volume 59, Number 3, May-June 2025
|
|
|---|---|---|
| Page(s) | 1729 - 1745 | |
| DOI | https://doi.org/10.1051/m2an/2025036 | |
| Published online | 26 June 2025 | |
A boundary integral equation formulation for transient electromagnetic transmission problems on Lipschitz domains
Department of Mathematics, The University of Arizona, Tucson, AZ, USA
* Corresponding author: tonatiuh@arizona.edu
Received:
8
July
2024
Accepted:
2
May
2025
We propose a boundary integral formulation for the dynamic problem of electromagnetic scattering and transmission by homogeneous dielectric obstacles. In the spirit of Costabel and Stephan, we use the transmission conditions to reduce the number of unknown densities and to formulate a system of coupled boundary integral equations describing the scattered and transmitted waves. The system is transformed into the Laplace domain where it is proven to be stable and uniquely solvable. The Laplace domain stability estimates are then used to establish the stability and unique solvability of the original time domain problem. Finally, we show how the bounds obtained in both Laplace and time domains can be used to derive error estimates for semi discrete Galerkin discretizations in space and for fully discrete numerical schemes that use Convolution Quadrature for time discretization and a conforming Galerkin method for discretization of the space variables.
Mathematics Subject Classification: 45A05 / 78A40 / 78M10 / 78M15
Key words: Electromagnetic scattering / transient wave scattering / time-dependent boundary integral equations / convolution quadrature
© The authors. Published by EDP Sciences, SMAI 2025
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